Spring Boot / Thymeleaf / Hibernate: Sessionfactory Bean with Java Annotations

Question

I\'ve created a Spring Boot web application with IntelliJ using Thymeleaf and Hibernate. I\'ve come so far that I can create all the db connections and it\'s working fine. A

Answer 1

I have taken this example from here.

@Bean
   public LocalSessionFactoryBean sessionFactory() {
      LocalSessionFactoryBean sessionFactory = new LocalSessionFactoryBean();
      sessionFactory.setDataSource(restDataSource());
      sessionFactory.setPackagesToScan(
        new String[] { "org.baeldung.spring.persistence.model" });
      sessionFactory.setHibernateProperties(hibernateProperties());

      return sessionFactory;
   }

   @Bean
   public DataSource restDataSource() {
      BasicDataSource dataSource = new BasicDataSource();
      dataSource.setDriverClassName(env.getProperty("jdbc.driverClassName"));
      dataSource.setUrl(env.getProperty("jdbc.url"));
      dataSource.setUsername(env.getProperty("jdbc.user"));
      dataSource.setPassword(env.getProperty("jdbc.pass"));

      return dataSource;
   }

Answer 2

Since you are using spring boot you should use XML free configuration for your database configuration . To integrate spring boot with hibernate you will need to create LocalSessionFactoryBean , DataSource ,HibernateTransactionManager and PersistenceExceptionTranslationPostProcessor bean like this:

@Configuration
public class DatabaseConfig {

    @Bean
    public LocalSessionFactoryBean sessionFactory() {
        LocalSessionFactoryBean sessionFactory = new LocalSessionFactoryBean();
        sessionFactory.setDataSource(dataSource());
        sessionFactory.setPackagesToScan("com.example.model");
        sessionFactory.setHibernateProperties(hibernateProperties());

        return sessionFactory;
    }

    @Bean
    public DataSource dataSource() {
        DriverManagerDataSource dataSource = new DriverManagerDataSource();
        dataSource.setDriverClassName("org.postgresql.Driver");
        dataSource.setUrl("jdbc:postgresql://localhost:5432/testdb");
        dataSource.setUsername("root");
        dataSource.setPassword("root");

        return dataSource;
    }

    @Bean
    @Autowired
    public HibernateTransactionManager transactionManager(SessionFactory sessionFactory) {

        HibernateTransactionManager txManager = new HibernateTransactionManager();
        txManager.setSessionFactory(sessionFactory);

        return txManager;
    }

    @Bean
    public PersistenceExceptionTranslationPostProcessor exceptionTranslation() {
        return new PersistenceExceptionTranslationPostProcessor();
    }

    Properties hibernateProperties() {
        Properties properties = new Properties();
        properties.setProperty("hibernate.ddl-auto", "update");
        properties.setProperty("hibernate.dialect", "org.hibernate.dialect.PostgreSQLDialect");
        return properties;
    }
}

In the above database config i have used postgreSQL database .

To get instance of sessionFactory autowire SessionFactory interface like this:

 @Autowired
 SessionFactory sessionFactory;

Answer 3

Have you tried this?

@Bean
public org.springframework.orm.hibernate5.LocalSessionFactoryBean sessionFactory(){
    org.springframework.orm.hibernate5.LocalSessionFactoryBean sessionFactory = new org.springframework.orm.hibernate5.LocalSessionFactoryBean();
    sessionFactory.setDataSource(dataSource());
    return sessionFactory;
}
@Bean
public DataSource dataSource() {

  BasicDataSource dataSource = new BasicDataSource();
  dataSource.setDriverClassName("jdbc.driverClassName");
  dataSource.setUrl("jdbc.url");
  dataSource.setUsername("jdbc.user");
  dataSource.setPassword("jdbc.pass");

  return dataSource;
}